Air conditioner



FIG. 1 is a front, bottom, and right side perspective view of an air conditioner showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a left side elevational view thereof; and,

FIG. 8 is an enlarged vertical cross-sectional view thereof taken along line 8—8 in FIG. 2. 

The ornamental design for an air conditioner, as shown and described. 